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Home » The sum formula for an arithmetic sequence is \( S_n = \fracn2 (2a + (n-1)d) \). - 500apps

The sum formula for an arithmetic sequence is \( S_n = \fracn2 (2a + (n-1)d) \). - 500apps

📅 March 13, 2026 👤 scraface

Mar 13, 2026

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Fórmula del perímetro: \(2(\text{longitud} + \text{ancho}) = 1400\)
\(2(w + w + 150) = 1400\)
\(4w + 300 = 1400\)
\(4w = 1100\)
\(w = 275\) metros (ancho)
Longitud = \(275 + 150 = 425\) metros
#### 275 metros de ancho, 425 metros de longitud
Un tanque puede ser llenado por dos tuberías. La tubería A puede llena...
Tasa de A = \(\frac{1}{5}\) tanque/hora
Tasa de B = \(\frac{1}{3}\) tanque/hora

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